Transesterification reaction of the BaSO4-filled PBT/Poly(ethylene terephthalate) blend

Sang Soo Lee; Junkyung Kim; Min Park; Soonho Lim; Chul Rim Choe

doi:10.1002/polb.10011

Transesterification reaction of the BaSO₄-filled PBT/Poly(ethylene terephthalate) blend

Sang Soo Lee, Junkyung Kim, Min Park, Soonho Lim, Chul Rim Choe

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

For the poly(butylene terephthalate) (PBT)/poly(ethylene terephthalate) blend system, the addition of a barium sulfate (BaSO₄) particle, the surface of which was modified with a titanate coupling agent, suppressed the transesterification reaction. The polyester chain ends, considered one of the main sites of transesterification reactions, were blocked through a chemical reaction with the surface hydroxyl groups of the BaSO₄ particle; a block copolymer-like architecture was obtained with a BaSO₄ linkage. The formation of the block copolymer-like structure for the polyesters stuck to the BaSO₄ particle facilitated crystallization by providing a crystallization nucleus without a significant transesterification reaction, resulting in higher mechanical properties.

Original language	English
Pages (from-to)	2589-2597
Number of pages	9
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	39
Issue number	21
DOIs	https://doi.org/10.1002/polb.10011
Publication status	Published - 2001 Nov 1

Keywords

Barium sulfate
Interfaces
PBT/poly(ethylene terephthalate) blends
Titanate coupling agent
Transesterification

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1002/polb.10011

Cite this

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title = "Transesterification reaction of the BaSO4-filled PBT/Poly(ethylene terephthalate) blend",

abstract = "For the poly(butylene terephthalate) (PBT)/poly(ethylene terephthalate) blend system, the addition of a barium sulfate (BaSO4) particle, the surface of which was modified with a titanate coupling agent, suppressed the transesterification reaction. The polyester chain ends, considered one of the main sites of transesterification reactions, were blocked through a chemical reaction with the surface hydroxyl groups of the BaSO4 particle; a block copolymer-like architecture was obtained with a BaSO4 linkage. The formation of the block copolymer-like structure for the polyesters stuck to the BaSO4 particle facilitated crystallization by providing a crystallization nucleus without a significant transesterification reaction, resulting in higher mechanical properties.",

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AU - Choe, Chul Rim

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AB - For the poly(butylene terephthalate) (PBT)/poly(ethylene terephthalate) blend system, the addition of a barium sulfate (BaSO4) particle, the surface of which was modified with a titanate coupling agent, suppressed the transesterification reaction. The polyester chain ends, considered one of the main sites of transesterification reactions, were blocked through a chemical reaction with the surface hydroxyl groups of the BaSO4 particle; a block copolymer-like architecture was obtained with a BaSO4 linkage. The formation of the block copolymer-like structure for the polyesters stuck to the BaSO4 particle facilitated crystallization by providing a crystallization nucleus without a significant transesterification reaction, resulting in higher mechanical properties.

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